diff --git a/src/Makefile b/src/Makefile
index 61257a8d8..8ac737d1f 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -298,7 +298,8 @@ ifeq ($(PCB), $(filter $(PCB), STD128 9X128 9XR128))
   MCU = atmega128
   OPT = 2
   SDCARD = NO
-  CPPDEFS = -DF_CPU=$(F_CPU)UL -DPCBSTD -DCPUM128 -DEEPROM_VARIANT=0x8000
+  EEPROM_VARIANT += ${M128_VARIANT}
+  CPPDEFS = -DF_CPU=$(F_CPU)UL -DPCBSTD -DCPUM128 -DEEPROM_VARIANT=$(shell echo ${EEPROM_VARIANT} | bc)
   EXTRAINCDIRS = stock
   BOARDSRC = stock/board_stock.cpp
   EXTRABOARDSRC = stock/lcd_driver.cpp
@@ -592,9 +593,10 @@ CPPDEFS += -DTRANSLATIONS_$(TRANSLATIONS)
 # TTS language
 CPPDEFS += -DTTS_$(TTS)
 
-GVARS_VARIANT  = +1 
-FRSKY_VARIANT  = +2
-3POS_VARIANT   = +4
+GVARS_VARIANT  = +0x0001 
+FRSKY_VARIANT  = +0x0002
+3POS_VARIANT   = +0x0004
+M128_VARIANT   = +0x8000
 EEPROM_VARIANT = 0
 
 ifeq ($(UNITS), IMPERIAL)
diff --git a/src/eeprom_rlc.cpp b/src/eeprom_rlc.cpp
index 3f3163deb..4091b1959 100644
--- a/src/eeprom_rlc.cpp
+++ b/src/eeprom_rlc.cpp
@@ -813,7 +813,7 @@ bool eeLoadGeneral()
   if (theFile.readRlc((uint8_t*)&g_eeGeneral, 1) == 1 && g_eeGeneral.version == EEPROM_VER) {
     theFile.openRlc(FILE_GENERAL);
     if (theFile.readRlc((uint8_t*)&g_eeGeneral, sizeof(g_eeGeneral)) <= sizeof(EEGeneral)) {
-#if defined(CPUM64)
+#if defined(PCBSTD)
       if (g_eeGeneral.variant == EEPROM_VARIANT && g_eeGeneral.chkSum == evalChkSum()) {
         return true;
       }
diff --git a/src/lcd.cpp b/src/lcd.cpp
index 980042094..5b7862b2e 100644
--- a/src/lcd.cpp
+++ b/src/lcd.cpp
@@ -813,7 +813,7 @@ void putsMixerSource(xcoord_t x, uint8_t y, uint8_t idx, LcdFlags att)
     putsStrIdx(x, y, STR_PPM, idx-MIXSRC_PPM1+1, att);
   else if (idx <= MIXSRC_LAST_CH)
     putsStrIdx(x, y, STR_CH, idx-MIXSRC_CH1+1, att);
-#if defined(GVARS) || !defined(CPUM64)
+#if defined(GVARS) || !defined(PCBSTD)
   else if (idx <= MIXSRC_LAST_GVAR)
     putsStrIdx(x, y, STR_GV, idx-MIXSRC_GVAR1+1, att);
 #endif
@@ -860,7 +860,7 @@ void putsSwitches(xcoord_t x, uint8_t y, int8_t idx, LcdFlags att)
   }
 #endif
 
-#if !defined(CPUM64)
+#if !defined(PCBSTD)
   else if (idx >= SWSRC_TRAINER_SHORT) {
     idx -= SWSRC_TRAINER_SHORT;
     lcd_putcAtt(x+3*FW, y, (idx & 1) ? CHR_LONG : CHR_SHORT, att);
diff --git a/src/menu_model.cpp b/src/menu_model.cpp
index 798696594..5e63c477a 100644
--- a/src/menu_model.cpp
+++ b/src/menu_model.cpp
@@ -1447,7 +1447,7 @@ enum menuModelPhaseItems {
   IF_ROTARY_ENCODERS(ITEM_MODEL_PHASE_ROTARY_ENCODERS)
   ITEM_MODEL_PHASE_FADE_IN,
   ITEM_MODEL_PHASE_FADE_OUT,
-#if defined(GVARS) && !defined(CPUM64)
+#if defined(GVARS) && !defined(PCBSTD)
   ITEM_MODEL_PHASE_GVARS_LABEL,
   ITEM_MODEL_PHASE_GV1,
   ITEM_MODEL_PHASE_GV2,
@@ -1463,7 +1463,7 @@ void menuModelPhaseOne(uint8_t event)
   PhaseData *phase = phaseaddress(s_currIdx);
   putsFlightPhase(13*FW, 0, s_currIdx+1, (getFlightPhase()==s_currIdx ? BOLD : 0));
 
-#if defined(GVARS) && !defined(CPUM64)
+#if defined(GVARS) && !defined(PCBSTD)
   static const pm_uint8_t mstate_tab_phase1[] PROGMEM = {0, 0, 0, (uint8_t)-1, 2, 2, 2, 2, 2};
   static const pm_uint8_t mstate_tab_others[] PROGMEM = {0, 0, 3, IF_ROTARY_ENCODERS(NUM_ROTARY_ENCODERS-1) 0, 0, (uint8_t)-1, 2, 2, 2, 2, 2};
 
@@ -1480,7 +1480,7 @@ void menuModelPhaseOne(uint8_t event)
   int8_t sub = m_posVert;
   int8_t editMode = s_editMode;
 
-#if defined(GVARS) && !defined(CPUM64)
+#if defined(GVARS) && !defined(PCBSTD)
   if (s_currIdx == 0 && sub>=ITEM_MODEL_PHASE_SWITCH) sub += ITEM_MODEL_PHASE_FADE_IN-ITEM_MODEL_PHASE_SWITCH;
 
   for (uint8_t k=0; k<LCD_LINES-1; k++) {
@@ -1557,7 +1557,7 @@ void menuModelPhaseOne(uint8_t event)
         phase->fadeOut = EDIT_DELAY(0, y, event, attr, STR_FADEOUT, phase->fadeOut);
         break;
 
-#if defined(GVARS) && !defined(CPUM64)
+#if defined(GVARS) && !defined(PCBSTD)
       case ITEM_MODEL_PHASE_GVARS_LABEL:
         lcd_putsLeft(y, STR_GLOBAL_VARS);
         break;
@@ -3050,7 +3050,7 @@ void menuModelLimits(uint8_t event)
 
 void menuModelCurvesAll(uint8_t event)
 {
-#if defined(GVARS) && defined(CPUM64)
+#if defined(GVARS) && defined(PCBSTD)
   SIMPLE_MENU(STR_MENUCURVES, menuTabModel, e_CurvesAll, 1+MAX_CURVES+MAX_GVARS);
 #else
   SIMPLE_MENU(STR_MENUCURVES, menuTabModel, e_CurvesAll, 1+MAX_CURVES);
@@ -3077,7 +3077,7 @@ void menuModelCurvesAll(uint8_t event)
     uint8_t y = 1 + FH + i*FH;
     uint8_t k = i + s_pgOfs;
     uint8_t attr = (sub == k ? INVERS : 0);
-#if defined(GVARS) && defined(CPUM64)
+#if defined(GVARS) && defined(PCBSTD)
     if (k < MAX_CURVES) {
       putsStrIdx(0, y, STR_CV, k+1, attr);
     }
diff --git a/src/myeeprom.h b/src/myeeprom.h
index 67861d92c..e8645f5e1 100644
--- a/src/myeeprom.h
+++ b/src/myeeprom.h
@@ -52,35 +52,36 @@
 #define BEEP_VAL     ( (g_eeGeneral.warnOpts & WARN_BVAL_BIT) >>3 )
 
 #if defined(PCBTARANIS)
-#define EEPROM_VER       214
+  #define EEPROM_VER       214
 #elif defined(PCBSKY9X)
-#define EEPROM_VER       214
-#elif defined(PCBGRUVIN9X) || defined(CPUM128)
-#define EEPROM_VER       214
+  #define EEPROM_VER       214
+#elif defined(PCBGRUVIN9X)
+  #define EEPROM_VER       214
+#elif defined(CPUM128)
+  #define EEPROM_VER       215
 #else
-#define EEPROM_VER       213
+  #define EEPROM_VER       213
 #endif
 
 #ifndef PACK
 #define PACK( __Declaration__ ) __Declaration__ __attribute__((__packed__))
 #endif
 
-
 typedef int16_t gvar_t;
 
-#if !defined(CPUM64)
+#if !defined(PCBSTD)
 typedef char gvar_name_t[6];
 #define GVAR_MAX  1024
 #endif
 
 #define RESERVE_RANGE_FOR_GVARS 10
 // even we do not spend space in EEPROM for 10 GVARS, we reserve the space inside the range of values, like offset, weight, etc.
-#if defined(CPUM64) && defined(GVARS)
+#if defined(PCBSTD) && defined(GVARS)
   #define MAX_GVARS 5
   #define MODEL_GVARS_DATA gvar_t gvars[MAX_GVARS];
   #define PHASE_GVARS_DATA
   #define GVAR_VALUE(x, p) g_model.gvars[x]
-#elif defined(CPUM64)
+#elif defined(PCBSTD)
   #define MAX_GVARS 0
   #define MODEL_GVARS_DATA
   #define PHASE_GVARS_DATA
@@ -252,7 +253,7 @@ PACK(typedef struct t_ExpoData {
   char    name[LEN_EXPOMIX_NAME];
   int8_t  curveParam;
 }) ExpoData;
-#elif defined(CPUM64)
+#elif defined(PCBSTD)
 PACK(typedef struct t_ExpoData {
   uint8_t mode:2;         // 0=end, 1=pos, 2=neg, 3=both
   int8_t  swtch:6;
@@ -354,7 +355,7 @@ PACK( union u_int8int16_t {
 #define DELAY_MAX   15 /* 7.5 seconds */
 #define SLOW_MAX    15 /* 7.5 seconds */
 
-#if defined(CPUM64)
+#if defined(PCBSTD)
 PACK(typedef struct t_MixData {
   uint8_t destCh:4;          // 0, 1..NUM_CHNOUT
   uint8_t curveMode:1;       // O=curve, 1=differential
@@ -823,7 +824,7 @@ PACK(typedef struct t_SwashRingData { // Swash Ring data
 #define ROTARY_ENCODER_ARRAY_EXTRA
 #endif
 
-#if defined(CPUM64)
+#if defined(PCBSTD)
 #define TRIM_ARRAY int8_t trim[4]; int8_t trim_ext:8
 #else
 #define TRIM_ARRAY int16_t trim[4]
@@ -859,7 +860,7 @@ PACK(typedef struct t_PhaseData {
   #define MAX_EXPOS  32
   #define NUM_CSW    32 // number of custom switches
   #define NUM_CFN    32 // number of functions assigned to switches
-#elif defined(PCBGRUVIN9X) || defined(CPUM128)
+#elif defined(PCBGRUVIN9X)
   #define MAX_MODELS 30
   #define NUM_CHNOUT 16 // number of real output channels CH1-CH16
   #define MAX_PHASES 6
@@ -867,6 +868,14 @@ PACK(typedef struct t_PhaseData {
   #define MAX_EXPOS  16
   #define NUM_CSW    15 // number of custom switches
   #define NUM_CFN    24 // number of functions assigned to switches
+#elif defined(CPUM128)
+  #define MAX_MODELS 30
+  #define NUM_CHNOUT 16 // number of real output channels CH1-CH16
+  #define MAX_PHASES 5
+  #define MAX_MIXERS 32
+  #define MAX_EXPOS  14
+  #define NUM_CSW    12 // number of custom switches
+  #define NUM_CFN    16 // number of functions assigned to switches
 #else
   #define MAX_MODELS 16
   #define NUM_CHNOUT 16 // number of real output channels CH1-CH16
@@ -952,7 +961,7 @@ enum SwitchSources {
   SWSRC_FIRST_MOMENT_SWITCH,
   SWSRC_LAST_MOMENT_SWITCH = SWSRC_FIRST_MOMENT_SWITCH+SWSRC_ON-1,
 
-#if !defined(CPUM64)
+#if !defined(PCBSTD)
   SWSRC_TRAINER_SHORT,
   SWSRC_TRAINER_LONG,
 #endif
@@ -1142,7 +1151,7 @@ enum FailsafeModes {
 
 #if defined(MAVLINK)
 #define TELEMETRY_DATA MavlinkData mavlink;
-#elif defined(FRSKY) || !defined(CPUM64)
+#elif defined(FRSKY)
 #define TELEMETRY_DATA FrSkyData frsky;
 #else
 #define TELEMETRY_DATA
@@ -1168,7 +1177,7 @@ PACK(typedef struct t_ModelData {
   uint8_t   extendedTrims:1;
   uint8_t   spare1:1;
   int8_t    ppmDelay;
-  BeepANACenter   beepANACenter;        // 1<<0->A1.. 1<<6->A7
+  BeepANACenter beepANACenter;        // 1<<0->A1.. 1<<6->A7
   MixData   mixData[MAX_MIXERS];
   LimitData limitData[NUM_CHNOUT];
   ExpoData  expoData[MAX_EXPOS];
@@ -1177,7 +1186,7 @@ PACK(typedef struct t_ModelData {
   int8_t    points[NUM_POINTS];
   
   CustomSwData customSw[NUM_CSW];
-  CustomFnData  funcSw[NUM_CFN];
+  CustomFnData funcSw[NUM_CFN];
   SwashRingData swashR;
   PhaseData phaseData[MAX_PHASES];
 
diff --git a/src/opentx.cpp b/src/opentx.cpp
index 91d63fa82..80f19d8d7 100644
--- a/src/opentx.cpp
+++ b/src/opentx.cpp
@@ -670,14 +670,13 @@ void applyExpos(int16_t *anas)
           else
             v = expo(v, GET_GVAR(curveParam, -100, 100, s_perout_flight_phase));
         }
-        int16_t weight=GET_GVAR(ed.weight, 0, 100, s_perout_flight_phase);
-        weight=calc100to256(weight);
+        int16_t weight = GET_GVAR(ed.weight, 0, 100, s_perout_flight_phase);
+        weight = calc100to256(weight);
         v = ((int32_t)v * weight) >> 8;
-        // v = ((int32_t)v * GET_GVAR(ed.weight, 0, 100, s_perout_flight_phase)) / 100;
         anas[cur_chn] = v;
-      } //endif
-    } //endif getSwitch
-  } //endfor
+      }
+    }
+  }
 }
 
 #if !defined(CPUARM)
@@ -1228,7 +1227,7 @@ uint8_t getFlightPhase()
 int16_t getRawTrimValue(uint8_t phase, uint8_t idx)
 {
   PhaseData *p = phaseaddress(phase);
-#if defined(CPUM64)
+#if defined(PCBSTD)
   return (((int16_t)p->trim[idx]) << 2) + ((p->trim_ext >> (2*idx)) & 0x03);
 #else
   return p->trim[idx];
@@ -1243,7 +1242,7 @@ int16_t getTrimValue(uint8_t phase, uint8_t idx)
 void setTrimValue(uint8_t phase, uint8_t idx, int16_t trim)
 {
   PhaseData *p = phaseaddress(phase);
-#if defined(CPUM64)
+#if defined(PCBSTD)
   p->trim[idx] = (int8_t)(trim >> 2);
   p->trim_ext = (p->trim_ext & ~(0x03 << (2*idx))) + (((trim & 0x03) << (2*idx)));
 #else
@@ -1318,7 +1317,7 @@ void incRotaryEncoder(uint8_t idx, int8_t inc)
 uint8_t s_gvar_timer = 0;
 uint8_t s_gvar_last = 0;
 
-#if defined(CPUM64)
+#if defined(PCBSTD)
 int16_t getGVarValue(int16_t x, int16_t min, int16_t max)
 {
   if (GV_IS_GV_VALUE(x,min,max)) {
@@ -1736,7 +1735,7 @@ uint8_t checkTrim(uint8_t event)
 #if defined(GVARS)
 #define TRIM_REUSED() trimGvar[idx] >= 0
     if (TRIM_REUSED()) {
-#if defined(CPUM64)
+#if defined(PCBSTD)
       phase = 0;
 #else
       phase = getGVarFlightPhase(s_perout_flight_phase, trimGvar[idx]);
@@ -2321,7 +2320,7 @@ PLAY_FUNCTION(playValue, uint8_t idx)
 }
 #endif
 
-#if !defined(CPUM64)
+#if !defined(PCBSTD)
 uint8_t mSwitchDuration[1+NUM_ROTARY_ENCODERS] = { 0 };
 #define CFN_PRESSLONG_DURATION   100
 #endif
@@ -2367,7 +2366,7 @@ void evalFunctions()
       MASK_CFN_TYPE  switch_mask   = ((MASK_CFN_TYPE)1 << i);
       uint8_t momentary = 0;
 
-#if !defined(CPUM64)
+#if !defined(PCBSTD)
 
   #define MOMENTARY_START_TEST() ( (momentary && !(activeSwitches & switch_mask) && active) || \
                                    (short_long==1 && !active && mSwitchDuration[mswitch]>0 && mSwitchDuration[mswitch]<CFN_PRESSLONG_DURATION) || \
@@ -2408,7 +2407,7 @@ void evalFunctions()
       if (active) newActiveSwitches |= switch_mask;
       if (momentary || short_long) {
 
-#if !defined(CPUM64)
+#if !defined(PCBSTD)
         bool swState = active;
 #endif
 
@@ -2439,7 +2438,7 @@ void evalFunctions()
           active = (activeFnSwitches & switch_mask);
           momentary = false;
         }
-#if !defined(CPUM64)
+#if !defined(PCBSTD)
         if (short_long) {
           if (swState) {
             if (mSwitchDuration[mswitch] < 255)
@@ -2982,7 +2981,8 @@ void perOut(uint8_t mode, uint8_t tick10ms)
       
       if (tmp.dword<0) {
         if ((tmp.words_t.hi&0xFF80)!=0xFF80) tmp.words_t.hi=0xFF86; // set to min nearly
-      } else {
+      }
+      else {
         if ((tmp.words_t.hi|0x007F)!=0x007F) tmp.words_t.hi=0x0079; // set to max nearly
       }
       *ptr=tmp.dword;
@@ -3313,9 +3313,9 @@ void doMixerCalculations()
       AUDIO_INACTIVITY();
 
 #if defined(AUDIO)
-    if (mixWarning & 1) if ((s_timeCumTot&0x03)== 0) AUDIO_MIX_WARNING(1);
-    if (mixWarning & 2) if ((s_timeCumTot&0x03)== 1) AUDIO_MIX_WARNING(2);
-    if (mixWarning & 4) if ((s_timeCumTot&0x03)== 2) AUDIO_MIX_WARNING(3);
+    if (mixWarning & 1) if ((s_timeCumTot&0x03)==0) AUDIO_MIX_WARNING(1);
+    if (mixWarning & 2) if ((s_timeCumTot&0x03)==1) AUDIO_MIX_WARNING(2);
+    if (mixWarning & 4) if ((s_timeCumTot&0x03)==2) AUDIO_MIX_WARNING(3);
 #endif
 
 #if defined(ACCURAT_THROTTLE_TIMER)
@@ -3633,7 +3633,7 @@ uint16_t getTmr16KHz()
 ISR(TIMER2_OVF_vect, ISR_NOBLOCK)
 {
   cli();
-  TIMSK &= ~ (1<<TOIE2) ; // stop reentrance
+  TIMSK &= ~(1<<TOIE2) ; // stop reentrance
   sei();
 
 #if defined(AUDIO)
@@ -3789,7 +3789,7 @@ ISR(USART0_UDRE_vect)
   else {
     FRSKY_USART0_vect();
   }
-#elif defined (FRSKY)
+#elif defined(FRSKY)
   FRSKY_USART0_vect();
 #else
   DSM2_USART0_vect();
diff --git a/src/opentx.h b/src/opentx.h
index 78bee828e..741aed2ee 100644
--- a/src/opentx.h
+++ b/src/opentx.h
@@ -772,7 +772,7 @@ extern void setTrimValue(uint8_t phase, uint8_t idx, int16_t trim);
 #endif
 
 #if defined(GVARS)
-  #if defined(CPUM64)
+  #if defined(PCBSTD)
     int16_t getGVarValue(int16_t x, int16_t min, int16_t max);
     void setGVarValue(uint8_t x, int8_t value);
     #define GET_GVAR(x, min, max, p) getGVarValue(x, min, max)
@@ -1118,7 +1118,7 @@ extern void moveTrimsToOffsets();
 #if defined(CPUARM)
   #define MASK_CFN_TYPE uint32_t  // current max = 32 function switches
   #define MASK_FUNC_TYPE uint32_t // current max = 32 functions
-#elif defined(CPUM64)
+#elif defined(PCBSTD)
   #define MASK_CFN_TYPE uint16_t  // current max = 16 function switches
   #define MASK_FUNC_TYPE uint16_t // current max = 16 functions
 #else
diff --git a/src/stock/voice.h b/src/stock/voice.h
index 061850e4b..83dd19b4b 100644
--- a/src/stock/voice.h
+++ b/src/stock/voice.h
@@ -41,11 +41,7 @@
 #define BACKLIGHT_BIT           0x04
 #define SPARE_BIT               0x08
 
-#if defined(CPUM64)
-  #define VOICE_Q_LENGTH        8
-#else
-  #define VOICE_Q_LENGTH        16
-#endif
+#define VOICE_Q_LENGTH        8
 
 // Voice states
 #define V_STARTUP               0
diff --git a/src/telemetry_frsky.cpp b/src/telemetry_frsky.cpp
index 044d497c0..94aa4315e 100644
--- a/src/telemetry_frsky.cpp
+++ b/src/telemetry_frsky.cpp
@@ -474,8 +474,7 @@ ISR(USART0_RX_vect)
   uint8_t data;
   
   UCSR0B &= ~(1 << RXCIE0); // disable Interrupt
-  sei() ;
-
+  sei();
 
   stat = UCSR0A; // USART control and Status Register 0 A
 
diff --git a/src/view_main.cpp b/src/view_main.cpp
index 4047ddc2b..828effe60 100644
--- a/src/view_main.cpp
+++ b/src/view_main.cpp
@@ -765,7 +765,7 @@ void menuMainView(uint8_t event)
       }
 #endif // PCBGRUVIN9X && ROTARY_ENCODERS
 
-      // Curstom Switches
+      // Custom Switches
 #if defined(PCBSKY9X)
       for (uint8_t i=0; i<NUM_CSW; i++) {
         int8_t len = getSwitch(SWSRC_SW1+i, 0) ? BAR_HEIGHT : 1;
@@ -779,7 +779,7 @@ void menuMainView(uint8_t event)
 #elif defined(PCBGRUVIN9X)
       for (uint8_t i=0; i<NUM_CSW; i++)
         putsSwitches(2*FW-2 + (i/3)*(4*FW-2) + (i/3>1 ? 3*FW : 0), 4*FH+1 + (i%3)*FH, SWSRC_SW1+i, getSwitch(SWSRC_SW1+i, 0) ? INVERS : 0);
-#elif !defined(CPUM64)
+#elif !defined(PCBSTD)
       for (uint8_t i=0; i<NUM_CSW; i++)
         putsSwitches(2*FW-2 + (i/3)*(4*FW-1), 4*FH+1 + (i%3)*FH, SWSRC_SW1+i, getSwitch(SWSRC_SW1+i, 0) ? INVERS : 0);
 #else
@@ -814,7 +814,7 @@ void menuMainView(uint8_t event)
     s_gvar_timer--;
     s_warning = PSTR("Global Variable");
     displayBox();
-#if defined(CPUM64)
+#if defined(PCBSTD)
     lcd_putsAtt(16+4*FW, 5*FH, PSTR("[\010]"), BOLD);
     lcd_outdezAtt(16+4*FW+4*FW+FW/2, 5*FH, GVAR_VALUE(s_gvar_last, s_perout_flight_phase), BOLD);
 #else